fastboot: document second parameter of 'fetch'

Add the OUT_FILE parameter to the documentation of fetch which fails if
used as currently (erroneously) documented:

    $ fastboot fetch boot
    fastboot: usage: expected argument

Test: fastboot help
Change-Id: Ia06d40c2f754e1a55a2052cb84e81f96e71b4573

parent 1fc3a2d9

fastboot/fastboot.cpp

+1 −1

Original line number	Diff line number	Diff line
		@@ -429,7 +429,7 @@ static int show_help() {
		" snapshot-update merge On devices that support snapshot-based updates, finish\n"
		" an in-progress update if it is in the \"merging\"\n"
		" phase.\n"
		" fetch PARTITION Fetch a partition image from the device."
		" fetch PARTITION OUT_FILE Fetch a partition image from the device."
		"\n"
		"boot image:\n"
		" boot KERNEL [RAMDISK [SECOND]]\n"